Getting ExceptionInInitializer exception when i am trying to code a time series chart
I am coding a timeSeriesChart using JFreeChart API,
below is the code
Code:
import java.awt.Color;
import java.text.DateFormat;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.labels.CategoryToolTipGenerator;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.time.Day;
import org.jfree.date.SerialDate;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class TimeSeriesChart extends ApplicationFrame {
public TimeSeriesChart(final String title) {
super(title);
// create a dataset...
final DefaultCategoryDataset dataset = new DefaultCategoryDataset();
// initialise the data...
final Day d1 = new Day(12, SerialDate.JUNE, 2002);
final Day d2 = new Day(14, SerialDate.JUNE, 2002);
final Day d3 = new Day(15, SerialDate.JUNE, 2002);
final Day d4 = new Day(10, SerialDate.JULY, 2002);
final Day d5 = new Day(20, SerialDate.JULY, 2002);
final Day d6 = new Day(22, SerialDate.AUGUST, 2002);
dataset.setValue(new Long(d1.getMiddleMillisecond()), "Series 1", "Requirement 1");
dataset.setValue(new Long(d1.getMiddleMillisecond()), "Series 1", "Requirement 2");
dataset.setValue(new Long(d2.getMiddleMillisecond()), "Series 1", "Requirement 3");
dataset.setValue(new Long(d3.getMiddleMillisecond()), "Series 2", "Requirement 1");
dataset.setValue(new Long(d4.getMiddleMillisecond()), "Series 2", "Requirement 3");
dataset.setValue(new Long(d5.getMiddleMillisecond()), "Series 3", "Requirement 2");
dataset.setValue(new Long(d6.getMiddleMillisecond()), "Series 1", "Requirement 4");
// create the chart...
final JFreeChart chart = ChartFactory.createBarChart(
"Event Frequency Demo", // title
"Category", // domain axis label
"Value", // range axis label
dataset, // dataset
PlotOrientation.HORIZONTAL, // orientation
true, // include legend
true, // tooltips
false // URLs
);
// NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
// set the background color for the chart...
chart.setBackgroundPaint(new Color(0xFF, 0xFF, 0xCC));
// final StandardLegend legend = (StandardLegend) chart.getLegend();
// legend.setDisplaySeriesShapes(true);
// get a reference to the plot for further customisation...
final CategoryPlot plot = chart.getCategoryPlot();
// plot.getDomainAxis().setMaxCategoryLabelWidthRatio(10.0f);
plot.setRangeAxis(new DateAxis("Date"));
final CategoryToolTipGenerator toolTipGenerator = new StandardCategoryToolTipGenerator(
"", DateFormat.getDateInstance()
);
// final CategoryItemRenderer renderer = new LineAndShapeRenderer(LineAndShapeRenderer.SHAPES);
// renderer.setToolTipGenerator(toolTipGenerator);
// plot.setRenderer(renderer);
// add the chart to a panel...
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}
public static void main(final String[] args) {
final TimeSeriesChart demo = new TimeSeriesChart("Event Frequency Demo");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
The Error is below:
Exception in thread "main" java.lang.ExceptionInInitializerError
at TimeSeriesChart.<init>(TimeSeriesChart.java:30)
at TimeSeriesChart.main(TimeSeriesChart.java:87)
Caused by: java.lang.RuntimeException: Uncompilable source code - cannot find symbol
symbol: class MonthConstants
at org.jfree.data.time.RegularTimePeriod.<clinit>(Reg ularTimePeriod.java:69)
... 2 more
Please any one help me,
Thanks..
/\/eeraj
